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Let the speeds of boats ‘A’ and ‘B’ in still water be 8x km/hr and 9x km/hr Therefore, speed of the current = 0.25 × 8x = 2x km/hr According to the question, 8x + 2x = 500/10 Or, 10x = 50 Or, x = 5 Therefore, upstream speed of boat ‘B’ = 9x – 2x = 7x = 35 km/hr Downstream speed of boat ‘B’ = 9x + 2x = 11x = 55 km/hr Required time taken = (70/35) + (275/55) = 2 + 5 = 7 hours
If + means – , – means x , x means ÷ and ÷ means +, then what will come in place of ? in the given equation?
7 ÷ 20 – 5 x 20 + 2 = ?
...If it was Saturday on 21st July 1928, then what was the day on 18 th March 1929?
Three of the following four letter-clusters are alike in a certain way and one is different.
Pick the odd one out.
'L - M ' means 'L is the brother of M'
'L # M' means 'L is the daughter of M'
'L * M' means 'L is the father of M'
Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series.
In a certain code RUMOUR is written as 49×794 and GRAM is written as #4@×. How will you write MARGO in that code?